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[argparse] Add required argument to add_subparsers #70697

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[argparse] Add required argument to add_subparsers#70697

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3.7 (EOL)end of lifeend of lifestdlibStandard Library Python modules in the Lib/ directoryStandard Library Python modules in the Lib/ directorytype-featureA feature request or enhancementA feature request or enhancement

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memeplex

mannequin

opened

on Mar 8, 2016

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BPO 26510

Nosy @ned-deily, @merwok, @asottile, @miss-islington

PRs bpo-26510: Allow argparse add_subparsers to take required kwarg. #3027
bpo-33109: argparse subparsers are once again not required by default #6919
[3.7] bpo-33109: argparse subparsers are once again not required by default (GH-6919) #7089
bpo-33109: Remove now-obsolete What's New entry for bpo-26510. #7609
[3.7] bpo-33109: Remove now-obsolete What's New entry for bpo-26510. (GH-7609) #7610
bpo-26510: Add versionchanged for required arg of add_subparsers #16588
[3.8] bpo-26510: Add versionchanged for required arg of add_subparsers (GH-16588) #16608
[3.7] bpo-26510: Add versionchanged for required arg of add_subparsers (GH-16588) #16609

^{Note: these values reflect the state of the issue at the time it was migrated and might not reflect the current state.}

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GitHub fields:

assignee = 'https://github.com/merwok'
closed_at = <Date 2017-09-20.21:36:42.299>
created_at = <Date 2016-03-08.13:56:01.475>
labels = ['3.7', 'type-feature', 'library']
title = '[argparse] Add required argument to add_subparsers'
updated_at = <Date 2019-10-15.07:30:26.268>
user = 'https://bugs.python.org/memeplex'

bugs.python.org fields:

activity = <Date 2019-10-15.07:30:26.268>
actor = 'ned.deily'
assignee = 'eric.araujo'
closed = True
closed_date = <Date 2017-09-20.21:36:42.299>
closer = 'eric.araujo'
components = ['Library (Lib)']
creation = <Date 2016-03-08.13:56:01.475>
creator = 'memeplex'
dependencies = []
files = []
hgrepos = []
issue_num = 26510
keywords = []
message_count = 12.0
messages = ['261358', '261535', '300282', '302660', '317500', '317512', '319265', '319267', '354060', '354061', '354062', '354700']
nosy_count = 7.0
nosy_names = ['bethard', 'ned.deily', 'eric.araujo', 'memeplex', 'paul.j3', 'Anthony Sottile', 'miss-islington']
pr_nums = ['3027', '6919', '7089', '7609', '7610', '16588', '16608', '16609']
priority = 'normal'
resolution = 'fixed'
stage = 'resolved'
status = 'closed'
superseder = None
type = 'enhancement'
url = 'https://bugs.python.org/issue26510'
versions = ['Python 3.7']

Activity

memeplex commented on Mar 8, 2016
memeplexmannequin
on Mar 8, 2016
MannequinAuthor
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It's useful in combination with dest. Currently you have to set required as an attribute. This is not only inconsistent but not even documented as a valid usage (in general, it's not clear from the docs whether attribute setting -vs argument passing- is a valid usage).
memeplex
added
stdlibStandard Library Python modules in the Lib/ directoryStandard Library Python modules in the Lib/ directory

type-featureA feature request or enhancementA feature request or enhancement
on Mar 8, 2016
memeplex
changed the title ~~[-]Add required argument to add_subparsers[/-]~~ [+][argparse] Add required argument to add_subparsers[/+] on Mar 8, 2016
paulj3 commented on Mar 11, 2016
paulj3mannequin
on Mar 11, 2016
Mannequin
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This has been raised before. I think

http://bugs.python.org/issue9253

is the correct issue.

It used to be that 'subparsers' were required. But there was a change in how 'required' arguments were tested, and 'subparsers' fell through the cracks. Now subparsers are optional (at least the parser doesn't raise an error). The temporary fix is to set the 'required' attribute after creation.

I proposed that the default be 'required=True', and that we be allowed to set the parameter. But that patch, like many others, has languished.
asottile commented on Aug 15, 2017
asottilemannequin
on Aug 15, 2017
Mannequin
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I've added a patch for this #3027

Would love to get a review so it could be included
merwok
added
3.7 (EOL)end of lifeend of life
on Sep 20, 2017
merwok
self-assigned this
on Sep 20, 2017
merwok commented on Sep 20, 2017
merwok
on Sep 20, 2017
Member
More actions
New changeset aaf6fc0 by Éric Araujo (Anthony Sottile) in branch 'master':
bpo-26510: make argparse subparsers required by default (bpo-3027)
aaf6fc0
merwok
closed this as completed on Sep 20, 2017
ned-deily commented on May 24, 2018
ned-deily
on May 24, 2018
Member
More actions
New changeset 8ebf5ce by Ned Deily in branch 'master':
bpo-33109: argparse subparsers are once again not required by default (GH-6919)
8ebf5ce
ned-deily commented on May 24, 2018
ned-deily
on May 24, 2018
Member
More actions
New changeset dd7a255 by Ned Deily (Miss Islington (bot)) in branch '3.7':
bpo-33109: argparse subparsers are once again not required by default (GH-6919) (GH-7089)
dd7a255
ned-deily commented on Jun 11, 2018
ned-deily
on Jun 11, 2018
Member
More actions
New changeset ef057bf by Ned Deily in branch 'master':
bpo-33109: Remove now-obsolete What's New entry for bpo-26510. (GH-7609)
ef057bf
ned-deily commented on Jun 11, 2018
ned-deily
on Jun 11, 2018
Member
More actions
New changeset a73399d by Ned Deily (Miss Islington (bot)) in branch '3.7':
bpo-33109: Remove now-obsolete What's New entry for bpo-26510. (GH-7609) (GH-7610)
a73399d
miss-islington commented on Oct 7, 2019
miss-islington
on Oct 7, 2019
Contributor
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New changeset 9e71917 by Miss Islington (bot) (Adam J. Stewart) in branch 'master':
bpo-26510: Add versionchanged for required arg of add_subparsers (GH-16588)
9e71917
miss-islington commented on Oct 7, 2019
miss-islington
on Oct 7, 2019
Contributor
More actions
New changeset 50b8d57 by Miss Islington (bot) in branch '3.7':
bpo-26510: Add versionchanged for required arg of add_subparsers (GH-16588)
50b8d57
miss-islington commented on Oct 7, 2019
miss-islington
on Oct 7, 2019
Contributor
More actions
New changeset f19b4d7 by Miss Islington (bot) in branch '3.8':
bpo-26510: Add versionchanged for required arg of add_subparsers (GH-16588)
f19b4d7
ned-deily commented on Oct 15, 2019
ned-deily
on Oct 15, 2019
Member
More actions
New changeset f168c17 by Ned Deily (Miss Islington (bot)) in branch '3.7':
bpo-26510: Add versionchanged for required arg of add_subparsers (GH-16588)
f168c17
ezio-melotti
transferred this issue from on Apr 10, 2022

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[argparse] Add required argument to add_subparsers #70697

Description

Activity

memeplex commented on Mar 8, 2016

paulj3 commented on Mar 11, 2016

asottile commented on Aug 15, 2017

merwok commented on Sep 20, 2017

ned-deily commented on May 24, 2018

ned-deily commented on May 24, 2018

ned-deily commented on Jun 11, 2018

ned-deily commented on Jun 11, 2018

miss-islington commented on Oct 7, 2019

miss-islington commented on Oct 7, 2019

miss-islington commented on Oct 7, 2019

ned-deily commented on Oct 15, 2019

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